Hot-air heater



March 26, 1929.

s. D. RICH HOT AIR HEATER Filed June 21, 1928 2 Sheets-Sheet 1 c'ufoz 6'50 ZmerD. Rich i ,ll

March 26, 5 H 1,707,096

I v I HOT AIR HEATER Filed June 21, 1928 2 Sheets-Sheet 2 //l qrrg 5 11 uc'uto'z J'Ze Zrner 12 R 25072 Patented Mar. 26, 1929."

SIELMER D; RIC-H, 0F NEWPORT, MAINE,

RICH, OF NEWPORT, MAINE;

HOT-AIR application filed June 21,

The invention relates to heaters wherein air from a suitable source is circulated through the furnace and utilized both for heating and ventilating.

In accordance with the invention a heater or furnace is provided having an air space around the ash pit, air passages in the walls of the fire box, banks of fines at the sides of the combustion chamber an dextending there over at an upward inclination, and damper controlled air inlets for admitting air into the air space surrounding the ash pit.

While the drawing illustrates a preferred embodiment of the invention, it is to be understood that in adapting the means to meet specific needs and requirements, the design may be varied and such other changes 1n the minor details of the invention as claimed may be made without departing from the sp1r1t thereof.

For a full understanding of the invention and the merits thereof, reference is to be had to the following description and the drawings hereto attached, in which Figure 1 is a vertical sectlonal view of a furnace embodying the invention on the hue 1-1 of Figure 2 looking in the direction of the arrows.

Figure 2 is a vertical transverse sectlonal view on the line 2+2 of Figure 1 looking to the left as designated by the arrows.

Figure 3 is a horizontal sectional .VIQW on the line 3-3 of Figure 1.

Figure 4 is a horizontal sectional view on the line 4 1 of Figure 1.

Figure 5 is a detail sectional view on the line 5-5 of Figure 4.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The invention is applicable to furnaces and heaters of various types and designs. The heater illustrated embodies an ash pit 1, a fire box 2 and a combustion chamber 3. An air space 4 surrounds the bottom and three sides of the ash pit, a pipe5 connects with the bottom of the furnace and supplies fresh air to the space '41. u

The upper portion of the pipe 5 flares as indicated most clearly in Figures 1 and 2 of of the damper to admit ASSIGNOR OF ONE-HALF TO C UYLER W.

HEATER.

1928. Serial No. 287,278.

the drawings.

Openings 6 are formed in the bottom of the heater and extend beyond the upper flared. portion of the pipe 5. A circular plate 7 is pivotally mounted upon the top of the bottom of the heater and is provided with an inner set ofopenings 8 and an outer set of openings 9, the latter being exterior to the upper flared portion of the pipe 5 as indicated most clearly in Figure 5 of the drawings. This plate constitutes a damper and is operable by means of a handle 10 which projects through and below the bottom of the heater. The openings 8 and 9 are disalined, or alternate, thereby admitting of adjustn'ient air into the space 4 from the pipe 5 or from the space exterior to the pipe, or from both the pipe and the surrounding space as may be desired.

As indicated most clearlyin Figures 1, 2 and 3 of the drawings banks of :tlues are provided at the back and opposite sides of the combustion chamber and are in communication with the space 4 surrounding the ash pit 1. The the box preferably consists of a casting in which vertical openings 11 are formed and with which the respective flues connect. The fines 12 at one side of the combustion chamber extend vertically thence laterally across the combustion chamber at an upward inclination as indicated at 13.

The flues 14 at the opposite side of the combustion chamber are similarly formed and extend across the combustion chamber at an. upward inclination as indicated at 15. The

inclined portions 13 and 15 cross one another at an intermediate point as indicated most clearly in Figure 1 of the drawings. The flues 16 at the rear of the combustion chamber 3 comprises vertical portions and upwardly inclined portions 17 the latter extending over the inclined ends 13 and 15 of the side fines. The several flues connect with the openings 11 of the fire box by means of a slip joint.

By having provision for the admission of fresh air and by having the air passages 11 in the walls of the lire box the latter is pre vented from warping and burning out so quickly and the air pressing through the air passages 11 is heated and is further heated in its passage through the several groups of lines 12, Hand 16 and put into circulatlon.

In' this manner the dwelling or other place not only may be more efieetively heated but may be Ventilated by a supply of fresh, pure heated air;

Having thus described the invention, I

7 claim supply fresh air to the said air space through the inner openings formed therein, and a plate pivoted upon the bottom of the furnace and formed with inner and outer openings to alternately, or partly register with the said inner and outer openings formed in the bottom of the furnace.

In testimony whereof I aifix my signature.

.STELMER D. RICH. 11.5. 

